Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
THE SOUND IT DESERVES
Even in the recent past 10АС9 sound system, each sound column which contains two versatile dynamic loudspeaker (one for low and medium frequencies and the other, with a diffuser of...
THE LAST “AMX” FRENCH TANK OF THE DYNASTY
Tank builders from different countries have sought to create a new machine jointly. In the summer of 1963, the Ministers of defense of the United States and Germany signed an agreement...
